Python:递归地从嵌套的字典和列表中提取注释树

data = {
    'a': 1,
    'b': [
        {'c': 2, 'comment': 'This is a comment'},
        {'d': 3},
        {'e': 4, 'comment': 'Another comment'}
    ],
    'f': {'g': 5, 'comment': 'Yet another comment'}
}

def extract_comments(data, comments=None):
    if comments is None:
        comments = []
    
    if isinstance(data, dict):
        for key, value in data.items():
            if key == 'comment':
                comments.append(value)
            else:
                extract_comments(value, comments)
    elif isinstance(data, list):
        for item in data:
            extract_comments(item, comments)
    
    return comments

# 使用函数提取注释
comments = extract_comments(data)
print(comments)

['This is a comment', 'Another comment', 'Yet another comment']